/Engine/Source/Developer/AssetTools/Public/IAssetTypeActions.h
Collects the source file labels for the imported assets
void GetSourceFileLabels ( const [TArray](API\Runtime\Core\Containers\TArray)< [UObject](API\Runtime\CoreUObject\UObject\UObject) * > & TypeAssets, [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & OutSourceFileLabels ) const